IAFPA Resolution - Voiceprints

The following resolution was passed at the IAFPA annual conference, Plymouth, UK, 24th July, 2007.

IAFPA dissociates itself from the approach to forensic speech comparison known as the "voiceprint" or "voicegram" method in the sense described in Tosi (1979).

This approach to forensic speaker identification involves the holistic, i.e., non-analytic, comparison of speech spectrograms in the absence of interpretation based on understanding of how spectrographic patterns relate to acoustic reflexes of articulatory events and vocal tract configurations.

The Association considers this approach to be without scientific foundation, and it should not be used in forensic casework.


Tosi, O.I. (1979) Voice Identification: Theory and Legal Applications. Baltimore: University Park Press.